CVE-2025-29778 - CVE House

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Status published Medium CVE-2025-29778

Kyverno ignores subjectRegExp and IssuerRegExp

5.8 CVSS

Vulnerability Description

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to version 1.14.0-alpha.1, Kyverno ignores subjectRegExp and IssuerRegExp while verifying artifact's sign with keyless mode. It allows the attacker to deploy kubernetes resources with the artifacts that were signed by unexpected certificate. Deploying these unauthorized kubernetes resources can lead to full compromise of kubernetes cluster. Version 1.14.0-alpha.1 contains a patch for the issue.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from kyverno

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Kyverno's Improper JMESPath Variable Evaluation Leads to Denial of Service

Kyverno vulnerable to bypass of policy rules that use namespace selectors in match statements

Kyverno's PolicyException objects can be created in any namespace by default

Attacker can cause Kyverno user to unintentionally consume insecure image

Denial of service from malicious signature in kyverno

Affected Vendor

kyverno

View all reports →

Affected Software

kyverno

Vulnerable Versions:

< 1.14.0-alpha.1

Timeline

Official Publish: March 24th, 2025

Last Modified: March 24th, 2025

Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N

Weaknesses (CWE)

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application

T1078 Valid Accounts

T1548 Abuse Elevation Control Mechanism

Privilege Escalation

T1021 Remote Services

Lateral Movement

T1098 Account Manipulation

Defense Evasion